.box{
    width: 900px;
    border: 1px solid #000;
    margin: 50px auto;
    box-sizing: border-box;
    padding: 20px;
}
.input{
    width: 500px;
    height: 50px;
}
.h2{
    font-weight: bold;
    color: #999;
    display: inline-block;
    margin: 0;
}
.header{
    border-bottom: 2px solid #999;
    padding-bottom: 20px;
    margin-bottom: 20px;
}
.content{
    border-bottom: 2px solid #999;
    margin-bottom: 20px;
    padding-bottom: 10px;
}
.content .title{
    font-size: 30px;
    font-weight: bold;
    color: indianred;
}
.m-r-10{
    margin-right: 10px;
}
.item{
    width: 100%;
    display: flex;
    align-content: center;
    justify-content: space-between;
    height: 50px;
}
.item>div{
    display: flex;
    align-items: center;
}